v4

latestOpenAPI 3.1.02026-08-019681,1012.0 MB

experiment

Create Experiment

Create a new experiment for a project.

post/projects/{project_id}/experiments

Path parameters

project_idstring uuid4 required

Request body

namestring required

playground_idstring uuid4 nullable

prompt_template_version_idstring uuid4 nullable

playground_prompt_idstring uuid4 nullable

triggerboolean

experiment_group_idstring uuid4 nullable

experiment_group_namestring nullable

Example request

{
  "scorers": [
    {
      "filters": [
        {
          "value": "ENUM_VALUE"
        }
      ]
    }
  ]
}

Response

Successful Response

idstring uuid4 required

Galileo ID of the experiment

created_atstring date-time

Timestamp of the experiment's creation

updated_atstring date-time nullable

Timestamp of the trace or span's last update

namestring

Name of the experiment

project_idstring uuid4 required

Galileo ID of the project associated with this experiment

created_bystring uuid4 nullable

num_spansinteger nullable

num_tracesinteger nullable

num_sessionsinteger nullable

task_type7 | 9 | 12 | 13 | 15 | 16 | 17 | 18 required

Valid task types for modeling.

We store these as ints instead of strings because we will be looking this up in the database frequently.

aggregate_metricsobject

structured_aggregate_metricsobject nullable

Structured aggregate metrics with full statistical aggregates (avg, min, max, sum, count). Keys are scorer UUIDs for scorer-backed metrics (matching available_columns column IDs after stripping the 'metrics/' prefix) and raw strings for system metrics (e.g. 'duration_ns', 'cost'). Present only when use_clickhouse_run_aggregates flag is enabled.

aggregate_feedbackobject

Aggregate feedback information related to the experiment (traces only)

rating_aggregatesobject

Annotation aggregates keyed by template ID and root type

ranking_scorenumber nullable

rankinteger nullable

winnerboolean nullable

playground_idstring uuid4 nullable

prompt_modelstring nullable

tagsobject

experiment_group_idstring uuid4 nullable

experiment_group_namestring nullable

experiment_group_is_systemboolean nullable